Patent US2808163A successfully refreshed from Google Patents.
US2808163A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hand truck for desks
Assignee: Individual
•
Filing: 1954-03-11
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Granted: 1957-10-01
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Expires: 1974-03-11
Abstract
No abstract record available.
Inventors
- 👤 Ii Max K Petzke
- 👤 Fanslau Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:04
CPC Classifications
B; B62; B62B; B62B1/00; B62B1/10; B62B1/14; B62B2202/00; B62B2202/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR959450A
Cited
US1490361A
Cited
US2151615A
Cited
US2280568A
Cited
US2554091A
Cited
US2636626A
Cited
US2673654A
Cited
US2645370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |